I know Heer would never fall in love with Gaurav. If she does, then she's a hypocrite, cuz she said herself she loves Prem's soul, not his face.
Buut!! -- If Gaurav was actually Prem, and Heer started develping mixed feelings for Gaurav becuase he sincerely started to seem like Prem to her. Then I would love that. The guilt she would have inside for even thinking about fallin in love with someone else, the broiling love inside her wanting to come out. Ah... ☺️
^^ Even in that Gaurav would have to fall in love with Heer first, becuase then I would like it like that better. Like Gaurav would be attracted to her tears, like Prem was, and he would sincerely want her tears to go away. *sigh* I would just love that. It would be like Prem and Heer falling in love with eachother again. But this time, going against what they felt was their true love towards a new attraction, which is their true love. It would just show the purity of their love so much... -- ah do I make any sense? 😆